Supporting BGP based IP-VPN in a routed network
US8929364B2 · kind B2 · utility
4Cited by
2References
20Claims
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Assignee
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Key dates
| Filing date | Nov 6, 2007 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Jan 10, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A new type of Provider Edge (PE) device is used to support BGP-based IP-VPNs. Each VRF instance in a PE device is associated with a dedicated IP address (Service IP address). Each service IP address is dedicated to a VRF in a PE device. The service IP address is distributed by BGP for VPN route association. Customer/VRF IP packets can be sent to a VRF instance in the egress PE device using service IP header encapsulation (with IP Destination Address=Service IP address of egress PE's VRF & IP Source Address=Service IP address of ingress PE's VRF). This obviates the need for explicit tunnels in the core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.